Home / 13,510.70-20,259.56-6,389.02

Finding the Fourth Proportional to 13,510.70, 20,259.56 and 6,389.02

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Solution

The fourth proportional to 13,510.70, 20,259.56 and 6,389.02 is: 9,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.70 : 20,259.56 = 6,389.02 : x
  2. Step 2: Convert to fraction form
    13,510.70/20,259.56 = 6,389.02/x
  3. Step 3: Cross multiply
    13,510.70x = 20,259.56 × 6,389.02
  4. Step 4: Simplify right side
    13,510.70x = 129,438,734.03
  5. Step 5: Solve for x
    x = 129,438,734.03/13,510.70
  6. Step 6: Final answer
    x = 9,580.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.